Coincidentally, Foo-Foo is also the name of the white poodle owned by Walter The Softy, Dennis' opponent in the British comic strip Dennis the Menace. He acts as the counterpart to Dennis' dog Gnasher.

Also, Foo-Foo is a popular term used around the world, referring to something that is all about flash and hype, than it’s functionality.
E.G
PERSON 1 - "You like my liquid filled power supply?"
PERSON 2 - "No that's Foo-Foo!"

Another example is the Mojo Nixon song 'Foo Foo Hair Cut', in which the singer complains that someone he previously liked and admired has had a haircut which cost a lot and made him look silly, two things a haircut should never do.